Reduced Order Model of Polarity Reversal Transient Electric Field of Converter Transformer Valve-side Bushing

被引：0
|
作者：
Wang Q. [1 ]
Chu Z. [1 ]
Cheng J. [2 ]
Zhang H. [1 ]
Liu P. [1 ]
Peng Z. [1 ]
机构：
[1] State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an
[2] Electric Power Research Institute of CSG, Guangzhou
来源：
Gaodianya Jishu/High Voltage Engineering | 2023年 / 49卷 / 06期
关键词：
converter transformer valve-side bushing; fast calculation; model reduction; polarity reversal electric field; proper orthogonal decomposition;
D O I：
10.13336/j.1003-6520.hve.20230165
中图分类号：
学科分类号：
摘要：
New digital power system in which new energy is taken as the main body is increasingly constructed, thus it is an important development trend of the future digital power grid to realize the digital twin system of the main equipment. Using model reduction method to improve calculation efficiency and realize fast real-time simulation is an important basis for the application of digital twins in the multi physical field simulation of power equipment. In this paper, based on proper orthogonal decomposition(POD) method, a fast finite element calculation method for solving polarity reversal transient electric field of converter transformer valve-side bushings is proposed. The Galerkin finite element numerical calculation method is applied to establish the electric field stiffness matrix of converter transformer valve-side bushings. The combined algorithm of imposing the virtual homogeneous boundary condition and sparse matrix is proposed for setting the potential boundary of the aluminum foil plate of the core. The processed matrix is extracted with principal components through matrix singular value decomposition, and the electric field reduced order model for converter transformer valve-side bushings is constructed. The results show that the electric field distribution of the converter transformer valve-side bushing obtained by the model reduction method in this paper is similar to the results calculated by commercial software. At the same time, the time required to calculate the electric field distribution of the bushing using the lightweight model is greatly reduced, which verifies that the reduction method has high accuracy and calculation efficiency.The feasibility of fast calculation and real-time simulation of electric field of power equipment such as bushings using model reduction method is proved. © 2023 Science Press. All rights reserved.
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页码：2420 / 2431
页数：11
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